Corner-strip.



PATENTED PEB. 19, 1907.

R. NIoHoLs. coRNRR STRIP.

APPLICATION FILED APB. 3,1905.

Em@ ira/205;, W1

UNITED STATES PATENT OFFICE.

EDWARD NICHOLS, OF OOHASSET, MASSACHUSETTS.

CORNER-STRIP.'

. Specification of Letters Patent,

Patented Feb. 19, 1907.

j Application filed April 3,1905. Serial No. 253,677.

To alt whom, it may concern:

Be it known that I, EDWARD N1cHOLs,`a citizen of the UnitedStates, residing at (lohasset, county of Norfolk, and State of Massachusetts, have invented an Improvement lmaking my invention are to provide a cornerstrip which can be made from sheet metal without the' loss of any material; to provide a corner-strip which is so constructed that the plastercan iiow readily around and into the open-work, and to provide a corner-strip which will firmly hold the plaster at the corner and prevent it .from cracking.

A corner-strip can be made without the loss of any material by making it of expanded sheet metal, and therefore l have incorporated my invention in a corner-strip of this type. ln order to produce a corner-'strip having an open-work of such character that the plaster will readily flow into and through it and that it will firmly hold the plaster, I slit and expand the metal in such a way that in the finished structure the corner-bead or straight edge is connected by inclined ribs or bars to attaching-strips, by which the cornerstrip as a whole is secured to the joist or studding. Preferably all the ribs or bars are .in-

clined'longitudinally ofthe corner-strip, and those on one side are inclined oppositely to those on the other side, thus bracing and increasing greatly the rigidity of the structure. Furthermore, I prefer to so arrange the slits that when the metal is expanded each bar on one side crosses or stands opposite an opening between two adjacent bars on the opposite side, so that each bar acts as a stop to prevent laster from being forced clear through t e opening between adjacent bars on the opposite side.

p Another feature of my invention relates to the adjustability of the corner-strip, by which I mean that the corner-strip is so con-` structed that'it can be adjusted to bring the corner-bead or straight edge farther from or nearer to the studdingor joist, as desired.

a piece of blank metal from which my cornerstrip may be formed. Fig. 2 is a side elevation of the-corner-strip .attached to a studding. Fig. 3 is a front elevation. Fig. 4 is a horizontal section through 'a studding having my corner-strip lattached, showing one form of strip. Fig. 5 is a similar view showing another form of strip. Figs. 6, 7, and 8 show different steps of one process Aby which the corner-strip can be made, and Fig. 9

shows the blank from which the corner-strip shown in Fig. 5 is made.

A corner-strip embodying my invention is provided with the corner-bead vor straight edge 3,'the two foot portions or attachingstrips 4, which overlie and are attached tov the studding or joist 5, to which the #cornerstrip is secured, and the parallel ribs or bars 6 and 7, which connect the corner-bead 0r straight edge. to the attaching-strips and which are inclined with reference to the length of the corner-stri the parallel bars 6 connecting the corneread to one attach- Referring'to the drawings, Figure 1' shows ing-strip, and the bars 7 connecting said corner-bead to the other attaching-strip.

In the preferred embodiment of my inven'- tionthe parallel bars 7 incline in an opposite direction from the parallel bars 6., a's best shown in Figs. 2 and 3, whereby the cornerbead or straight edge portion is braced, and a very rigid structure is produced, and each baron one side of the corner-strip crosses or stands opposite an open space between two adjacent bars on the other side ofthe cornerstrip. This latter feature of my invention I regard as of some importance, because when. each bar is thus placed o poslte a space between adjacent bars ont e other side each bar actsas a stop to intercept theilow-of@ plaster as it is applied from the opposite side, and thereby causes the plaster to fill solidly in, behind the corner-bead or straight edge, thus forming a solid corner.

A'corner-strip having the above construction would embody my invention however it were made;l but I refer to make it from sheet metal, which 1s slit and expanded to produce the open-work portion thereof.

One way of making the form of corner-bead y shown in Figs'. 2, 3, and 4 is to take a strip'of sheet metal 8as shown in Fig; 1, bend the same longitudinally valong the dotted line 9, so that the two wings 10 and 1 1 stand at subn Fig. 6, and thereafter pinch the apex ofthe IOC .stantially right angles to each other, as shown strip While into the angular shape shown in Fig. Gorv angular strip together to produce the cornerl bead portion 3asshown 1n Fig. 7, andmake in each of the wings and 11 a plurality of parallel inclined slits, as indicated in dotted lines 13 in Figi. .The slits in each wing extend in the Same direction.

The slits on the lines 13 may he cut in the it is still flat and Ibefore it is -bent after `it has been so bent or at the Atime of bending. The itimef.when.these slits are cut is.-irnrnaterial. Ajiter theyl havesbeenl eut,

` however, and .after the corner-bead portion has been formed as lshown in Fig. 7, the metal of.the-WingS #10..andllis -expandedby separatingthcedges 14 .of the wings, .which .edges constituteztheattaching-strips 4 afterithe expanding operationfroin the corner-head 3. This operation ,results inabending the solid portions of the'metal-between .the slits intoV the shape `shown inliigs. 2, 3, and 4,\thereby to produce the parallel bars 6 and 7 ,.which.

connect ,each attaching-stripwith the cornerbeadportion.

By .making the. slitsinclined in the same directionin each wing, :thebars 6 vconnecting one attaGliing-istrip. to the ,corner-.head having an Opposite inclination inthe direction of the length'of the corner-beadfrom that which the bars ''.haveVWhich lconnectthe other attachin -stripl to the Acorner-bead. The result of this construction is that .the Ycornerbead or.

. straightedge portion 3, is veryiirmlybraced,

and a veryrigidstructure issecured. lnthe 55 completed structure ,eachbar onone side of .thecorner-strip crosses or standsopposite an opening between two, adjacent. bars on the opposite Iside. iWith such a structure eachbar 7 forms` af-,stop to intercept-.the `ow of plaster when being applied ato the lcorn-er-Jstrip from the iside hangthefbars'., and therebT preventsthe plaster .from flowing .clear through p the corner-strip and being wasted more o r less.

y .By thusarranging the bars on one sidewith relationto those on the otlierthe plaster can be .readily lil-led in solidlyhehind the corner- .bead .without ,any waste, anda solid corner canbereadily formed.

1 It-.will be vI-,lQled .that when ,the metal is expanded .the edges of'thabars face toward theside of ,the c01ner-strip,; and therefore a Irunimumresistance. is oered to the. application of the plasterand that @the wide-.face of each bar .extends -transYeISely -of the .strucfortheiplaster when'itis app ture, thus affording -thebest lpossible. support ied.

Int g; 4 the corner-.beadportion 3 is sha ed .to presentaJ comparatively sharp ye. t ylnfsome circumstances` a corner-head or straight .edgewith around surface, such as shownlin ,-Fig. 5is desirable. vThis `can :be produced ley-,using a little Wider-strip'of metal 8?,.asshownin Figi), and `bending.said metal along lthedotted; lines l5, thereby lto roduce 6 a corner-.bead 3, of. a shape `shown in ig. 5.

'v from flowing c that. the

the corner-strip or tance between the corner-bead and attaching- 7 5 tical direction. lf,

It will thus be seen that a corner-bead em-l bodying my invention is veryy rigid, and the open-work portion is such that the plaster may .readily flow into it, but is prevented laster is securely held therein. Another a vantage inherent in a construction embodying my inventionis that the size of in other words, the disstrips-isdeterminedby the .amount that the metal of the wings isl expanded and not by the amount of metal used. lSince the process of expanding may vbe carried to a greater or less extent in the same machine, it is possi- 8o ble .by myinvention to make a variety of sizes of corner-strips at. a minimum expense.

Still another advantage isxthat the cornerbead portion 3 maybe adjusted toward and from .the joist or lstudding after the cornerstri is in place by merely giving the `two attac ing-strips arelativemovement in a veror instance, the-.righthand attaching-strip .in-Fig. 3 is iiXedly secured to the studding 5 and the left-hand at- 9o taching-strip 41s moved upwardly with .reference 4to the right-hand .attaching-strip the corner-bead portion 3l will be carried outwardly,wl1ile ifsaidleft-hand attaching-.strip isV moved downwardly with-reference to the right-hand attaching-strip' the corner-bead portion 3 will be drawn in toward =the studding. By roviding theleft-hand attachingstri With-s ots 1'7itis ossibleto adjust it..u

or own-,thereby to adJustfthe'distancewhic roo the corner-bead projectsbeyondthe s tudding. As' stated above, my improv-.ed .cornerstri comprises the straight edge. and the atltac ing-strips connected .-by -twoseriesfof 'inclinedbars, the bars otone .seriesinclining oppositely to those of -theother series. The `corner-strip, therefore, .has all ithe members of a truss and is, infact, a-trussed structure, the corner-bead 3 constituting one chord, .the

attaching-strips 4 constituting the other no bead, and two wings extending ftherefrom, '12o each composed of metal slitted ,and expanded to the same degree to form inclined straight parallel bars connecting :the corner-bead with an attaching-strip.

2. A corner-strip comprising a corner- 125 bead, and tWo Wings extending therefrom, eachcomposed of metal -slitted and lexpanded to the same degree `to form inclined, parallel bars connecting the corner-bead with an attaching-strip, said bars all having an inclina- 13o lear through it7 and also such 7o tion longitudinally of the corner-strip and the parallel bars on one wing inclining oppositely to those of the other wing.

3. A corner-strip comprising a cornerbead and two wings or side portions extending therefrom, each wing being formed of metal slitted and expanded to the saine degree to present an attaching-strip and an open-work portion formed of parallel bars which connect the strip'witli the corner-bead7 each bar of one wing crossing or standing opposite the open space between two adjacent ars ofthe other Wing.

4. A corner-strip comprising a cornerbead and two Wings or side ortions extending therefrom, each wing eing formed of metal slitted and expanded' to the same d egree to resent an attaching-strip and an open-wom portion formed of parallel bars inclined in the direction ofthe length of the corner-strip, the bars of one Wing being inclined oppositely toy those of the other, and each bar of either wing standing opposite and crossing the open space between two adi jacent bars of the other wing.

5. An expanded metal corner-strip coinprising a corner-bead portion, attachingstrips to be secured to a studding, and a portion of expanded metal connecting the corner-bead with each attaching-strip, said portions of expanded metal belng expanded to the same degree and one of said stri sbeing ca able of adjustment longitudinal y with re ation to the other strip thereby to vary uniformly the degree to which both portions of the metal are expanded and consequently 4 the distance between the corner-bead and atj taching-strips.

6. An expanded metal corner-strip conlprising a corner-bead portion, attachingstrips to be secured to a studding, and a portion of expanded metal connecting the corner-bead with each attaching-strip, said portions of expanded metal bein expanded` to the same degree, one of sai strips being adjustable vertically on the stndding, whereby the expanded metal portion may be expanded uniformly more or less thereby to adjust the corner-bead toward and from the studding.

7. A corner-strip made in the form of a truss having similar sides and also having a corner-bead, and means to secure it in place.

8. A corner-strip comprising a corner- A bead and two Wings or side ortions extending therefrom, each wing eing formed of metal slitted and expanded to the same degree to form parallel bars connecting the corner-bead with an attaching-strip, each bar presenting a thin edge at the side of the corner-bead, and a wide face extendin transversely of the corner-strip whereby t e plaster may readily enter the o en-work portion of the corner-strip and a 'wir e support for the plaster is provided.

. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

` EDWARD NICHOLS. Witnesses:

LoUIs C. SMITH, BERTHA F. HEUSER. 

